HARRIER BOOK 2

TATA MOTORS Ltd.

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SRS / Airbag

ECU – DTC Troubleshooting Guide

Version: 14.0

Date: 14-February-2017

Prepared by:Airbag COC Review &

Approved by:Sanjeev VM

Page: 126 of 549

B100E-96:- Frontal Impact Driver sensor component internal failure

Overview:-

ISO Code

B100E96

Customer Symptom

SRS Warning Lamp continuously ON in Instrument Cluster.

Fault Effects (On Vehicle)

Front Crash detection performance is degraded &

Front Driver angular crash detection is not guaranteed.

Lamp Status (If Any)

SRS Warning Lamp continuously ON in Instrument Cluster.

Fault Detection Condition

This fault gets logged if Frontal Impact Driver sensor has internal

component failure

Normal Operating Condition

Internal component failure should not be present.

Probable Trouble Area

Related wiring Harness, connector or terminals

Frontal Impact Driver sensor

Airbag Wiring Harness

Airbag ECU

Healing Condition

Frontal Impact Driver sensor has to be replaced.

Component Details:-

Frontal Impact Sensor

:- It is usually located in the radiator support vertical member. Front impact sensors collect the

data necessary to make decisions about Airbag deployment.

Airbag ECU

:- It is fitted in the floor of central console in the car. The Airbag Electronic Control Unit (ECU) controls the

deployment system to allow an appropriate igniting of the Airbags and belt pre-tensioners to restrain the driver and

passengers.

Preliminary Checks:-

1. Check Battery Voltage (12 V & above)

2. Check for any faults in Airbag Warning Lamp indication in Instrument Clus ter.

3. Ensure the proper locking of Airbag ECU wiring harness connectors in the vehicle by the locking sound.

Check whether the Frontal Impact Driver sensor is connected properly to the wiring harness. Ensure

the proper locking of the Frontal Impact Driver sensor to the wiring harness connector.

Trouble Shooting:-